What does the acronym SMART refer to?%!

• A. Superiority, Measurement, Appropriability, Replicability, Transparency
• B. Specific, Measurable, Achievable, Realistic, Timescale
• C. Substitutability, Measurement, Appropriability, Replicability, Transparency
• D. Specific, Measurable, Achievable, Realistic, Timely